esy install is broken

[eWert-Online]

The fmt.tty library doesn't seem to be found.

The dependency is stated as follows:
"@opam/redemon": "github:ulrikstrid/redemon:redemon.opam"

File "bin/dune", line 4, characters 44-51:
4 |  (libraries luv unix cmdliner logs logs.fmt fmt.tty))
                                                ^^^^^^^
Error: Library "fmt.tty" not found.
Hint: try:
    dune external-lib-deps --missing -p redemon -j 4 @install
error: command failed: 'dune' 'build' '-p' 'redemon' '-j' '4' '@install' (exited with 1)
esy-build-package: exiting with errors above...

As a workaround I pinned the following commit:
"@opam/redemon": "github:ulrikstrid/redemon:redemon.opam#4c69ed7779f62ce74720a4e28acf60bc23a853a5"